<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
// import resize from './mixins/resize'

export default {
  // mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart',
    },
    width: {
      type: String,
      default: '100%',
    },
    height: {
      type: String,
      default: '350px',
    },
    autoResize: {
      type: Boolean,
      default: true,
    },
    chartData: {
      type: Object,
      required: true,
    },
  },
  data() {
    return {
      chart: null,
    }
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val)
      },
    },
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      this.setOptions(this.chartData)
    },
    setOptions(chartData) {
      let option = {}
      if (!chartData || Object.keys(chartData).length === 0 || chartData.empty === true) {
        option = {
          xAxis: {
            data: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
            boundaryGap: false,
            axisTick: {
              show: false,
            },
          },
          grid: {
            left: 10,
            right: 10,
            bottom: 20,
            top: 30,
            containLabel: true,
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
            },
            padding: [5, 10],
          },
          yAxis: {
            axisTick: {
              show: false,
            },
          },
          legend: {
            data: ['暂无数据'],
          },
          series: [
            {
              name: '暂无数据',
              smooth: true,
              type: 'line',
              data: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
              animationDuration: 3000,
              animationEasing: 'cubicInOut',
            },
          ],
        }
      } else {
        let x = null
        let series = []
        for (let key in chartData) {
          x = chartData[key].x
          series.push({
            name: key,
            smooth: true,
            type: 'line',
            data: chartData[key].y,
            animationDuration: 3000,
            animationEasing: 'cubicInOut',
          })
        }

        option = {
          xAxis: {
            data: x,
            boundaryGap: false,
            axisTick: {
              show: false,
            },
          },
          grid: {
            left: 10,
            right: 10,
            bottom: 20,
            top: 30,
            containLabel: true,
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
            },
            padding: [5, 10],
          },
          yAxis: {
            axisTick: {
              show: false,
            },
          },
          legend: {
            data: Object.keys(chartData),
          },
          series,
        }
      }

      this.chart.setOption(option, true)
    },
  },
}
</script>
